Synonyms of puerility

2 Syllables
greenness, rawness
3 Syllables
fatuousness, battiness, brainlessness, doltishness, goofiness, childishness, babyishness, callowness, shallowness, silliness
4 Syllables
imperfection, nitwittedness, thick-headedness, weak-mindedness, inaneness, infantilism, frivolity, stupidities, ignorance, obtuseness, thickheadedness, stupidity
5 Syllables
incompleteness, injudiciousness, feeble-mindedness, inexperience, feeblemindedness